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The present study was to investigate the trophic state of Nansi Lake, a shallow lake employed in the South-to-North Water Diversion Project in China. Based on water transparency, total phosphorus (TP) and chlorophyll a (chl a) concentration, the modified method of Carlson's trophic state index (TSIM) was applied to assess the lake's trophic status. The Shannon diversity index of phytoplankton was...
The landscape of reclaimed water always broke out water bloom because of containing high concentrations of nitrogen and phosphorus. The TP and TN of the landscape decreased to 0.04 mg/L and 2.27 mg/L respectively with recycling ozonation at the end of the experiment. Chlorophyll a was 94.3 mg/m3 and CODCr was 45.1 mg/L. Ozonation could inactivate the algae but not destroy the cell completely. Comparing...
A 4-month data set was used to investigate historical changes between the number of the Cyanobacteria and concentrations of total nitrogen (TN), total phosphorus (TP), TN:TP, chemical oxygen dawdling (COD), NO3, pH and Chl-a in a shallow temperate zone lake (Guishui Lake, Beijing, China). The aim was to evaluate changes in the risk of Cyanobacteria blooms, which have occurred several times in the...
Based on the analysis of the water quality monitoring data of Xingkai Lake in 2008, the eutrophic level of the water body was evaluated through a comprehensive trophic state index method. The results showed that the comprehensive trophic state index (CTSI) was 47.7 for Da Xingkai and 50.1 for Xiao Xingkai, which indicated that Da Xingkai is in a mesotrophic state and Xiao Xingkai in a light eutrophic...
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